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Caption

Researcher standing in one end of the CMS (Compact Muon Solenoid) detector at CERN (the European particle physics laboratory) near Geneva, Switzerland, during maintenance. The CMS detector sits around the large hadron collider (LHC), CERN's highest energy particle accelerator. In July 2012 it was announced that the CMS and ATLAS (a torodial LHC apparatus) experiments at the LHC had detected a Higgs boson particle for the first time. The Higgs boson is thought to give other particles mass.